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skelet666 [1.2K]
3 years ago
7

HELP ASAP!!! I’m really confused. Thanks!!

Mathematics
2 answers:
lawyer [7]3 years ago
5 0

Answer:

137°

Step-by-step explanation:

ACD = ACB+BCD

ACD= 75°+62°= 137°

Rasek [7]3 years ago
3 0

Answer:

Angle ACD = ANGLE ACB + BCD

=75°+62

= 137°

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7nadin3 [17]

Las edades de cada uno de los integrantes del acertijo son:

  • Luisa = 3 años
  • Juan = 6 años
  • Carmen = 8 años

Cálculo por medio de ecuaciones.

Para identificar la edad de cada persona en el acertijo, se pueden crear ecuaciones con la información brindada, aunque, primero se deben asignar variables:

  • <em>L = Edad de Luisa</em>
  • <em>J = Edad de Juan</em>
  • <em>C = Edad de Carmen</em>

Teniendo estas variables se procede a crear las ecuaciones, la primera parte del ejercicio dice que "<em>Luisa es 3 años más joven que su hermano Juan</em>", entonces la ecuación podría ser:

  • 1. J = L + 3

La segunda parte dice que "<em>su hermana Carmen es 2 años mayor que Juan</em>", entonces:

  • 2. C = J + 2

Y la tercera parte menciona que "<em>Juan tiene el doble de edad que Luisa</em>", por lo tanto:

  • 3. J = 2L

Se realiza el método de reducción con la primera y la tercera ecuación, para calcular el valor de L:

  • 1. J = L + 3 (<em>Se multiplica por (-1) puesto que la variable que se busca reducir es J</em>)
  • 3. J = 2L

Entonces se calcula:

  • - J = - L - 3
  •  J = 2L

 

  • 0 = L - 3 (<em>El número 3 que está restando se pasa a sumar al otro lado de la igualdad</em>)
  • 3 = L
  • <u>L = 3</u>

Teniendo el valor de L, se calcula el valor de J con la tercera ecuación:

  • J = 2L
  • J = 2 * 3
  • <u>J = 6</u>

Y con el valor de J, se calcula el valor de C con la segunda ecuación:

  • C = J + 2
  • C = 6 + 2
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De esta forma, se calcula que <u>las edades de Luisa, Juan y Carmen son: 3 años, 6 años y 8 años respectivamente</u>.

Más información:

brainly.com/question/1225667?referrer=searchResults

3 0
3 years ago
Use the fact that the world population was 2,560 million in 1950 and 3,040 million in 1960 to model the population of the world
Serga [27]

Answer:

The relative growth rate is 18.75%.

Step-by-step explanation:

If the world population was 2.560 million in 1950 and 3.040 million in 1960, it means that there was a growth of 480 million people in 10 years. Thus, it is a growth of 18.75%, according to the following calculation:

2,560 = 100

480 = X

(480 x 100) / 2,560 = X

48,000 / 2,560 = X

18.75 = X

Therefore, if this growth rate were to be maintained, in subsequent years the world population would evolve as follows:

1970: 3,040 x 1.1875 = 3,610 million inhabitants

1980: 3,610 x 1.1875 = 4,286 million inhabitants

1990: 4,286.8 x 1.1875 = 5,090 million inhabitants

8 0
3 years ago
The measures of the angles of the triangle solve for x
maksim [4K]

Answer:

x = 8

Step-by-step explanation:

if the angle is equal to 36º that means (3x+12)º = 36º so simplify the equation and solve for x

3x+12 = 36

3x = 24

x = 8

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3 years ago
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goldenfox [79]

Find answers to the questions in the attached file.

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2 years ago
Explain why the square root of -4 is not a real number, but cube root of -8 is
IceJOKER [234]
Because -2 times -2 is 4 and 2 x 2 is 4 as well. So you cant have -4. 
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4 years ago
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